Electrocatalysis in Solid Oxide Fuel Cells and Electrolyzers

Chemical Reviews, Год журнала: 2024, Номер 124(13), С. 8233 - 8306

Опубликована: Июнь 17, 2024

Interest in energy-to-X and X-to-energy (where X represents green hydrogen, carbon-based fuels, or ammonia) technologies has expanded the field of electrochemical conversion storage. Solid oxide cells (SOCs) are among most promising for these processes. Their unmatched efficiencies result from favorable thermodynamics kinetics at elevated operating temperatures (400-900 °C). These solid-state systems exhibit flexibility reversible operation between fuel cell electrolysis modes can efficiently utilize a variety fuels. However, electrocatalytic materials SOC electrodes remain nonoptimal facilitating flexibility. In this Review, we explore diverse range utilized oxygen-ion-conducting SOCs (O-SOCs) proton-conducting (H-SOCs). We examine their activity as function composition structure across different reactions to highlight characteristics that lead optimal catalytic performance. Catalyst deactivation mechanisms under conditions discussed assess bottlenecks conclude by providing guidelines evaluating performance electrode catalysts designing effective achieve usage mode operation.

Язык: Английский

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Recent Advances and Challenges of Hydrogen Production Technologies via Renewable Energy Sources

Advanced Energy and Sustainability Research, Год журнала: 2024, Номер 5(5)

Опубликована: Фев. 5, 2024

Currently, fossil fuels play a major role in meeting the world's energy demand. Fossil fuels, contrast, threaten planet's ecosystems and biological processes, contribute to global warming, result unfavorable climatic shifts. These sources are also finite will eventually deplete. Thus, transition, which is key from renewable sources, regarded as an essential course of action for decarbonizing economy reducing catastrophic irreversible effects climate change. Thereby using/consuming green hydrogen vital solution meet challenges. Subsequently, pros cons several generation methods, such conversion biomass, water electrolysis, microbial fermentation, photocatalysis, then compared outlined terms their technologies, economies, consumption energy, environmental aspects, costs. chemical industry uses (H 2 ) primarily produce emerging methanol ammonia (NH 3 ), alternate energy. Finally, current state demands, recent developments potential future fuel outlined. Moreover, discussion concludes with predicted opportunities

Язык: Английский

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A review of electrolyzer-based systems providing grid ancillary services: current status, market, challenges and future directions

Frontiers in Energy Research, Год журнала: 2024, Номер 12

Опубликована: Фев. 8, 2024

Concerns related to climate change have shifted global attention towards advanced, sustainable, and decarbonized energy systems. While renewable resources such as wind solar offer environmentally friendly alternatives, their inherent variability intermittency present significant challenges grid stability reliability. The integration of sources requires innovative solutions effectively balance supply demand in the electricity grid. This review explores critical role electrolyzer systems addressing these by providing ancillary services modern grids. Electrolyzers traditionally used only for hydrogen production now emerged versatile tools capable responding quickly load variations. They can consume during excess periods or when integrated with fuel cells generate peak demand, contributing stability. Therefore, fulfill dual function producing end-user offering balancing services, ensuring greater economic feasibility. paper aims provide a comprehensive view systems’ provision including frequency control, voltage congestion management, black start. technical aspects, market, projects, challenges, future prospects using electrolyzers are explored.

Язык: Английский

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4E assessment of all-day clean electricity generation systems based on green hydrogen integrated system using PV and PVT solar collectors and wind turbines

International Journal of Hydrogen Energy, Год журнала: 2024, Номер unknown

Опубликована: Май 1, 2024

Язык: Английский

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Feasibility analysis and Atlas for green hydrogen project in MENA region: Production, cost, and environmental maps

Solar Energy, Год журнала: 2024, Номер 268, С. 112326 - 112326

Опубликована: Янв. 1, 2024

Язык: Английский

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